To achieve the valorization of whole compositions of lignocellulosic biomass, flow fractionation (FF) was developed based on the flow chemistry of the major components of biomass, i.e., glucan, xylan, and lignin. Three kinds of solvent, i.e., water, formic acid, and p-toluenesulfonic acid (p-TsOH), were employed in FF treatments of poplar wood for an evaluation of performance in structure and yield of products. The advantage of FF was firstly confirmed by the nearly complete recovery of glucan in solid product, and the greatly enhanced digestibility of enzymatic hydrolysis as indicated by the glucose yield of 68.1 % at a low cellulase dosage of 10 FPU/g solid product from water treated poplar wood. The second advantage of FF was the rapid hydrolysis and very slight degradation of xylan for the three solvents explored, especially for water as indicated by the xylose yield of 80.3 % from poplar wood treated at 200 °C just for 15 min.. Last but not least, structure-preserved lignins were harvested from biomass with good yield, e.g., 40.3 % of lignin yield and 99.8 % of β-O-4 retention from poplar wood using water as solvent. Thus-obtained lignin (F72T130t30) was successfully transformed to hydrocarbons over Ru/Nb₂O₅ catalyst with the yield of 21 wt%. In short, these remarkable performances of FF in products structure and yield build a feasible valorization of lignocellulosic biomass for sustainable biorefinery.

为了实现木质纤维素生物质的整体组成的价值化，基于生物质主要成分（即葡聚糖、木聚糖和木质素）的流动化学开发了流动分级 (FF)。三种溶剂，即水、甲酸和p-甲苯磺酸 (p-TsOH) 用于杨木的 FF 处理，以评估产品的结构性能和产量。FF 的优势首先通过几乎完全回收固体产品中的葡聚糖得到证实，并且大大提高了酶水解的消化率，这表明在 10 FPU/g 的低纤维素酶用量下，来自水处理的固体产品的葡萄糖产率为 68.1%杨木。FF 的第二个优势是所研究的三种溶剂的木聚糖快速水解和非常轻微的降解，特别是对于水，如在 200 °C 下处理 15 分钟的杨木的木糖产率为 80.3% 所示。最后但不是至少，从具有良好产量的生物质中收获了结构保存的木质素，例如，木质素产量的 40.3% 和 99. 使用水作为溶剂，杨木的 β-O-4 保留率为 8%。由此获得的木质素 (F72T130t30) 在 Ru/Nb 上成功转化为碳氢化合物₂ O ₅催化剂，产率为21wt%。简而言之，FF 在产品结构和产量方面的这些卓越表现为可持续生物精炼建立了可行的木质纤维素生物质价值。